我手头有一个自定义拦截器,我想让它与一个使用注释的Action类相关联。我使用struts.xml中声明的那个添加了interceptor-ref,但是得到了异常,
"SEVERE: Exception starting filter Struts2
Unable to load configuration. - [unknown location]"
我的Action类如下,
@Action(value = "/login", results = {
@Result(name = "success", location = "/Welcome.jsp"),
@Result(name = "error", location = "/Login.jsp") },
interceptorRefs = {
@InterceptorRef("defaultStack"),
@InterceptorRef("myLogging")}
)
public String validateCredentials() {
if (this.userName.equals("Raj") && this.password.equals("aspire")) {
return "success";
} else {
// addActionError(getText("error.login"));
return "error";
}
}
我的struts.xml如下,
<package name="default" extends="struts-default" namespace="/">
<interceptors>
<interceptor name="myLogging" class="org.struts.hello.MyLoggingInterceptor"/>
</interceptors>
</package>
错误堆栈:
SEVERE: Exception starting filter Struts2
Unable to load configuration. - [unknown location]
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: Unable to find interceptor class referenced by ref-name loggingStack - [unknown location]
at com.opensymphony.xwork2.config.providers.InterceptorBuilder.constructInterceptorReference(InterceptorBuilder.java:52)
at org.apache.struts2.convention.DefaultInterceptorMapBuilder.buildInterceptorList(DefaultInterceptorMapBuilder.java:99)
at org.apache.struts2.convention.DefaultInterceptorMapBuilder.build(DefaultInterceptorMapBuilder.java:90)
at org.apache.struts2.convention.DefaultInterceptorMapBuilder.build(DefaultInterceptorMapBuilder.java:74)
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.createActionConfig(PackageBasedActionConfigBuilder.java:676)
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildConfiguration(PackageBasedActionConfigBuilder.java:493)
at org.apache.struts2.convention.PackageBasedActionConfigBuilder.buildActionConfigs(PackageBasedActionConfigBuilder.java:278)
at org.apache.struts2.convention.ClasspathPackageProvider.loadPackages(ClasspathPackageProvider.java:52)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:200)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
... 21 more
Dec 22, 2011 3:30:22 PM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
Dec 22, 2011 3:30:22 PM org.apache.catalina.core.StandardContext start
SEVERE: Context [/StrutsAnnotation] startup failed due to previous errors
答案 0 :(得分:3)
我没有使用带有或不带struts2的注释的exp,但我相信你正在使用convention-plugin。这里是他们对你的问题说的快速镜头。
如果您收到“无法找到引用的拦截器类”之类的错误 ref-name XYZ“。这意味着公约所在的包裹 你的行为,不会扩展拦截器所在的包 定义。要解决这个问题
- 使用@ParentPackage注释(或struts.convention.default.parent.package) 传递定义拦截器的包的名称。
- 用XML创建一个包,用于扩展定义拦截器的包, 并使用@ParentPackage(或Struts.convention.default.parent.package)指向它。
醇>
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